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Jurnal Ilmu Dasar
Published by Universitas Jember
ISSN : 24425613     EISSN : -     DOI : https://doi.org/10.19184/jid.v24i2.36657
Core Subject : Education, Engineering,
Control & Systems Engineering Mathematics
Jurnal ILMU DASAR (JID) is a national peer-reviewed and open access journal that publishes research papers encompasses all aspects of natural sciences including Mathematics, Physics, Chemistry and Biology. JID publishes 2 issues in 1 volume per year. First published, volume 1 issue 1, in January 2000 and avalaible in electronically since 2012 with ISSN 1411-5735 (Print) and avalaible in electronically since 2012 with ISSN 2442-5613 (online). Jurnal ILMU DASAR is accredited SINTA 3 by the Ministry of Education, Culture, Research, and Technology of the Republic of Indonesia (Kemendibukristek) No. 152/E/KPT/2023 (September 25, 2023), Ministry of Research, Technology and Higher Education of the Republic of Indonesia (RISTEKDIKTI), No. 200/M/KPT/2020 (December. 23, 2020). All accepted manuscripts will be published worldwide JID has been indexed in DOAJ, Dimension, OCLC WorldCat, PKP Index, Crossref, Google Scholar, Base, Garuda, and OneSearch. JID have been collaborated in KOBI-ID (Konsorsium Biologi Indonesia) and HKI (Himpunan Kimia Indonesia) since 2017.
Arjuna Subject : Matematika - Kontrol dan Optimasi
Articles 384 Documents
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A C3 Magic Decomposition on Friendship Graph with Odd Order Indah Chairun Nisa; Sigit Pancahayani; Annisa Rahmita Soemarsono
Jurnal ILMU DASAR Vol 23 No 1 (2022)
Publisher : Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19184/jid.v23i1.23266

Abstract

Let G = (V,E) is graph with a non-empty set V containing vertices and a set of edges E. Also note that if H = {H_i⊆G_i = 1,2,3,...,n} is a collection of subgraphs from G with H_i≅Hj,i ≠ j. If Hi ∩ Hj = ∅ and ⋃n(i-1)Hi = G, then graph G admits a decomposition H. Furthermore, if there are f(v) and g(e) which are vertices and edges labeling at G, the total weight of each subgraph H_i,i = 1,2,3,…,n has the same value, namely ∑_(v∈V(H_i))▒〖f(v)〗+∑_(e∈E(H_i))▒〖g(e)〗= w, then the graph G contains the magic H_i decomposition with w as the magic constant. This research shows that the friendship graph F_n with n = 2k + 1 for k∈N admits a magic -(a,d)-C_3 decomposition with a magic constant w of 29dk + 6a + 15d.
Antagonism Potentials of Endophytic Fungi from Lemongrass (Cymbopogon nardus (L.) Rendle) on Escherichia coli Salma Khatami Al Hadi; Erlia Narulita; Siti Murdiyah
Jurnal ILMU DASAR Vol 23 No 1 (2022)
Publisher : Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19184/jid.v23i1.21390

Abstract

This study aimed to determine the potential antagonism performed by the endophytic fungi of lemongrass against Escherichia coli. Five species of endophytic fungi were tested using agar well method. These fungi consist of Paecilomyces lilacinus, Penicillium sp., Trichoderma viride, Fusarium oxysporum, and Fusarium sp., each was taken from roots, stem, and leaves, respectively. Chloramphenicol and aquadest were used as control. The results showed that there is significant inhibition of E. coli compared to the negative control. Paecilomyces lilacinus showing the most prominent inhibition with 74.67%, followed by unknown species of Fusarium 47.33%, Penicillium sp 42.67%, Fusarium oxysporum 21.67%, and Trichoderma viride 17.43%. It can be concluded that all five isolates of endophytic fungi from lemongrass (Cymbophogon nardus (L.) Rendle) have the ability to inhibit the growth of E. coli, and thus have antagonism potential against E. coli.
Vibration Test Fixtures Design for Payload of Tubular Telemetry System Muksin Muksin; Mikhael Gilang Pribadi P. Pratama; Yudha Agung Nugroho; Yusuf Giri Wijaya; Nur Mufidatul Ula; Adi Wirawan
Jurnal ILMU DASAR Vol 23 No 1 (2022)
Publisher : Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19184/jid.v23i1.23894

Abstract

Vibration testing on telemetry system payload is needed to determine its resistance to vibration during operation. Vibration testing of telemetry system payloads requires a test fixture. Test fixture is used to transmit vibration from shaker to telemetry system payload. The payload of telemetry system to be tested is a tubular. The test fixture in this study was designed using SolidWorks software. The material used for manufacture of test fixture is aluminum. Aluminum material was chosen because it has good rigidity with a relatively light mass. Stiffness and mass properties affect to natural frequency value of test fixture, which must be greater than the frequency range of operating telemetry system. Data collection uses two accelerometers placed on test fixture. Sine sweep vibrations are given from 5 Hz to 2000 Hz with a constant amplitude of 1 g and a sweep rate of 1 octave/minute. The test produces three peaks that they are candidates as natural frequencies, i.e at a frequency of 1532 Hz with an amplitude of 2.898 g, a frequency of 1706 Hz with an amplitude of 6.582 g, and at a frequency of 1806 Hz with an amplitude of 6.472 g. From those three natural frequencies, the second natural frequency at 1706 Hz is the most critically because it has the largest response value.
Optimization of qRT-PCR Annealing Temperature of WRKY45 Gene for Detection of Resistance Genes Against Xanthomonas oryzae pv. oryzae on Black Rice Cempo Ireng Triyaningsih Triyaningsih; Tri Rini Nuringtyas; Yekti Asih Purwestri; Alfino Sebastian
Jurnal ILMU DASAR Vol 23 No 1 (2022)
Publisher : Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19184/jid.v23i1.24181

Abstract

Plant pathogens constrain the development of black rice farming. One of these pathogens is Xanthomonas oryzae pv. oryzae (Xoo), causing a bacterial leaf blight disease. The disease disrupts crop growth and reducing yields. Cempo ireng is a local pigmented rice cultivar from Yogyakarta, Indonesia, which is reported for its high resistance to Xoo. One of the rice resistance mechanisms to Xoo infection is a molecular defense employing plant resistance genes such as WRKY45. Comparing the expression of resistance-related genes of the resistant cultivar to the susceptible ones is needed to elucidate the resistance mechanism of the black rice to Xoo. For this purpose, the expression of WRKY45 gene at the level of mRNA can be performed using qRT-PCR. The success of qPCR analysis is greatly influenced by the accuracy of the annealing primer temperature of the corresponding gene. This study aimed to optimize the primer's annealing temperature for WRKY45 gene. The optimization was done by a temperature gradient PCR. Determination of the optimal annealing temperature was selected based on the profile of the amplification curve, melt curve, melt temperature and the Ct value obtained. The annealing temperature gradient used in this study was ranging from 52°C to 60°C. The results showed that the best annealing temperature for WRKY45 gene primers is 58.3°C based on the amplification curve, melt curve, melt peak and Ct value of 29.21.
Agronomic Performance of F3 Populations of Tomato for Hydroponic Cultivation at Lowland Greenhouse Nur Futri Salsabilla Febriani; Resti Lestari; Sigit Widiyanto; Ady Daryanto
Jurnal ILMU DASAR Vol 23 No 1 (2022)
Publisher : Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19184/jid.v23i1.24230

Abstract

Tomatoes consumption continues to increase, but it’s constrained by low productivity in central production, so a plant breeding program is needed to improve the yield and adaptability of tomatoes in urban areas. This study aimed to analyze the agronomic performance of F3 tomato populations for hydroponic cultivation in a lowland greenhouse. The F3 populations derived from crosses of commercial variety Rewako x Tantyna (Rw.Ta-4-7U, w.Ta-4-10U, and Rw.Ta-1-14U) and Agatha x Ultima (Ag.Ul-5-7U & Ag.Ul-5-14U). The research was conducted at the Gunadarma University’s experimental greenhouse in Depok City, West Java, from March to August 2020. Twenty-fifth-day-old seedlings from each population were planted in a planter bag. The experiment was carried out using a single plant design for F3 generation and a randomized complete block design (RCBD) for the commercial varieties. The result showed that a number of fruit per plant, and fruit weight per plant had wide genetic variabilities among F3 populations. All characters had a high broad-sense heritability except for flowering days and harvesting days. The high advance genetic, along with high mean values, was shown by the F3 populations of Rw.Ta-4-10U, Rw.Ta-4-7U and Ag.Ul-5-14U. The high value of genetic variability, heritability, and genetic advance will help to select the program for the next generation.
Preliminary Assessment of The Population Structure and Habitat Characteristics of Javan Langur (Trachyphitecus auratus É. Geoffroy, 1812) in Natural Reserve Watangan Puger Muhammad Asyrofi; Hari Sulistiyowati; Retno Wimbaningrum
Jurnal ILMU DASAR Vol 23 No 1 (2022)
Publisher : Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19184/jid.v23i1.26032

Abstract

Javan langur (Trachypithecus auratus É. Geoffroy, 1812) is categorized by IUCN as a vulnerable primate species since 2008 and protected under 2018 LHK regulation. They can be found across Java Island, also in the Watangan Puger Nature Reserve (WPNR), East Java. There is no information about the population and habitat characteristics of Javan langur in WPNR except their existence. This research study aims to estimate the population structure, population density, and habitat characteristics of the Javan Langur in the WPNR, within the area of 2.6 ha. Three concentration points for daily observations were determined for 3 days. A combination of concentration count with scan sampling observation method at intervals of 30 minutes every hour of observation was done to get the data of density, position, population structure, and plant species preferred by Javan langurs. The important value, diversity Shannon-Wiener index, and plant species preferred were also analyzed. There are 26 population composed of two groups of the Javan langur occupying an area of 1,118 ha (43%). The population size estimatation for the first group was 17 individuals with a population density of 15.17 individu/ha, while that for the second group was 9 individuals with a population density of 8.02 individu/ha. The twenty-six Javan langurs are composed of complete age structure such as adult 69%, sub-adult 15%, and infant 16%. The Javan langur population was mostly found in the vegetation structure of Syzygium jambos (jambu hutan) to Pithecellobium dulce (asam manila) (IV = 45.47 to 3.88). Total 24 tree species are found in WNPR, most of the trees are used by the Javan langur as food and cover. The tree community in WPNR has medium diversity with value of 2.28. Furthermore, the Javan langur prefer Artocarpus elasticus (bendo) and Syzygium jambos (jambu hutan) at the upper strata (> 15 meters) than other trees and strata. Most of them are actively walking or jumping (locomotion) during the activity observed at the tree community.
Cover JID Volume 23 No 1 (2022) Jurnal ILMU DASAR
Jurnal ILMU DASAR Vol 23 No 1 (2022)
Publisher : Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Value at Risk with Performing Exponential Generalized Autoregressive Conditional Heteroscedasticity–Generalized Pareto Distribution Nadiyah Hafidah Sinambela; Di Asih I Maruddani; Arief Rachman Hakim
Jurnal ILMU DASAR Vol 23 No 1 (2022)
Publisher : Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19184/jid.v23i1.18822

Abstract

Stocks are an investment that many investors are interested in but often have a high risk. Value at Risk (VaR) is one tool that is often used in risk measurement. In general, financial data fluctuate rapidly so that the variants of the residuals are not constant or heteroscedasticity. The condition of heteroscedasticity is modeled using the ARCH/GARCH model. If there is an asymmetric effect on the data, it is modeled using an asymmetric GARCH model, namely Exponential GARCH (EGARCH). In addition to the impacts of heteroscedasticity and asymmetric events, extreme events in fat distribution tails are modeled using the Extreme Value Theory method, namely the Peaks Over Threshold method with the Generalized Pareto Distribution (GPD) approach. The data in this study is the return data of PT. Indocement Tunggal Prakarsa Tbk (INTP) for the period of March 1, 2013 - October 31, 2018. It was found that the data was heteroscedasticity, asymmetric, and there were also fat distribution tails, so it was modeled using a combination of EGARCH-GPD models. ARIMA ([2], 0, [2,13]) EGARCH (1,1) has the smallest AIC compared to other models, and then we choose it as the best model. The amount of risk with a 95% confidence level obtained with the GPD approach is 0.333% of current investment.
Effect of Black Soybean (Glycine soja) Extract on Ovarian Histology of Swiss Webster Mice (Mus musculus L) Unilateral Ovariectomy Mahriani Mahriani; Eva Tyas Utami; Nindita Fitria Primasari
Jurnal ILMU DASAR Vol 23 No 1 (2022)
Publisher : Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19184/jid.v23i1.10787

Abstract

Estrogen production can be reduced due to menopause and ovariectomy. Decreased estrogen levels in the body cause physiological changes in the female reproductive system. Therefore, the intake of estrogen from outside the body is needed, in this case phytoestrogens from soy bean extract can be used to replace the role of endogenous estrogen. The study used 30 Swiss Webster mice (Mus musculus) aged 90 days weighing 35 grams which were unilateral ovariectomy. Mice are ready to be used as test animals after an estrogen deficiency period of 60 days. Mice are ready to be used as test animals after an estrogen deficiency period of 60 days. Mice were divided into five groups: negative control, positive control, dose 0.21, 0.42, and 0.63 g/mL/day . Data obtained from the results of the study were analyzed using the One Way ANOVA test with a confidence level of 99% or α = 0.01. Based on the results of the study, the administration of black soybean flour extract in unilateral ovariectomy mice can increase the average number of primordial follicles at doses of 0.42 g/ml/day and dosage 0.63 g/ml/day, primary follicles at a dose of 0.42 g/ml/day and doses of 0.63 g/ml/day, and secondary follicles at a dose of 0.63 g / ml / day, and tend to increase the average number of primordial follicles at doses of 0.21 g/ml/day, follicles primary at doses of 0.21 g/ml/day, secondary follicles at doses of 0.21 g/ml/day and 0.42 g/ml/day, de Graaf follicles at doses of 0.21, 0. 42 and 0.63 g/ml/day.
Construction of Three Branches Fractal Trees Using Iterated Function System Kosala Dwidja Purnomo; Dita Wahyuningtyas; Firdaus Ubaidillah
Jurnal ILMU DASAR Vol 23 No 1 (2022)
Publisher : Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19184/jid.v23i1.17447

Abstract

There are two types of fractal: natural fractals and fractals set. The examples of natural fractals are trees, leaves, ferns, mountain, and coastlines. One of the examples of fractals set is Pythagorean tree. In the earlier study, the Pythagorean tree has two branches generated through several affine transformations, i.e dilation and rotation. Here, we developed the Pythagorean tree (or fractal tree) with three branches through dilation, translation, and rotation transformation using Iterated Function System (IFS) method. Some values of height and length parameters were selected to ensure the formation of a fractal tree. These parameters affected the branching angle that can result in different fractal tree shape. Some random values of height and length parameters produced several variations of fractal tree. These values influenced the shape of fractal whether it tended to the left, to the right, or symmetrical shape.

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